Reduce overly aggressive use of narrowAm / narrowPm.

Increase threshold to 4 from 2. Given that this threshold is
applied independently, we now have a few more languages where we
use a mixture of narrow and regular AM/PM markers. Those languages
are : Bodo (brx), Cherokee (chr), Ewe (ee), German Swiss (gsw, not de-CH)
and Makonde (kde).

I've included a full table of diffs in the commit message.

bug: 22208502

1,5c1,5
<     L= af AM= v , PM= n
<     L= af-NA AM= v , PM= n
<     L= af-ZA AM= v , PM= n
<     L= agq AM= a , PM= p
<     L= agq-CM AM= a , PM= p
---
>     L= af AM= vm. , PM= nm.
>     L= af-NA AM= vm. , PM= nm.
>     L= af-ZA AM= vm. , PM= nm.
>     L= agq AM= a.g , PM= a.k
>     L= agq-CM AM= a.g , PM= a.k
9,10c9,10
<     L= am AM= ጠ , PM= ከ
<     L= am-ET AM= ጠ , PM= ከ
---
>     L= am AM= ጥዋት , PM= ከሰዓት
>     L= am-ET AM= ጥዋት , PM= ከሰዓት
68,71c68,71
<     L= br AM= am , PM= gm
<     L= br-FR AM= am , PM= gm
<     L= brx AM= a , PM= p
<     L= brx-IN AM= a , PM= p
---
>     L= br AM= A.M. , PM= G.M.
>     L= br-FR AM= A.M. , PM= G.M.
>     L= brx AM= फुं , PM= p
>     L= brx-IN AM= फुं , PM= p
84,85c84,85
<     L= chr AM= a , PM= p
<     L= chr-US AM= a , PM= p
---
>     L= chr AM= ᏌᎾᎴ , PM= p
>     L= chr-US AM= ᏌᎾᎴ , PM= p
114,119c114,119
<     L= ee AM= a , PM= p
<     L= ee-GH AM= a , PM= p
<     L= ee-TG AM= a , PM= p
<     L= el AM= π , PM= μ
<     L= el-CY AM= π , PM= μ
<     L= el-GR AM= π , PM= μ
---
>     L= ee AM= ŋdi , PM= p
>     L= ee-GH AM= ŋdi , PM= p
>     L= ee-TG AM= ŋdi , PM= p
>     L= el AM= π.μ. , PM= μ.μ.
>     L= el-CY AM= π.μ. , PM= μ.μ.
>     L= el-GR AM= π.μ. , PM= μ.μ.
144c144
<     L= en-GB AM= a , PM= p
---
>     L= en-GB AM= a.m. , PM= p.m.
153c153
<     L= en-IE AM= a , PM= p
---
>     L= en-IE AM= a.m. , PM= p.m.
215c215
<     L= eo AM= a , PM= p
---
>     L= eo AM= atm , PM= ptm
314,315c314,315
<     L= ga AM= a , PM= p
<     L= ga-IE AM= a , PM= p
---
>     L= ga AM= a.m. , PM= p.m.
>     L= ga-IE AM= a.m. , PM= p.m.
318,323c318,323
<     L= gl AM= a , PM= p
<     L= gl-ES AM= a , PM= p
<     L= gsw AM= a , PM= p
<     L= gsw-CH AM= a , PM= p
<     L= gsw-FR AM= a , PM= p
<     L= gsw-LI AM= a , PM= p
---
>     L= gl AM= a.m. , PM= p.m.
>     L= gl-ES AM= a.m. , PM= p.m.
>     L= gsw AM= a , PM= nam.
>     L= gsw-CH AM= a , PM= nam.
>     L= gsw-FR AM= a , PM= nam.
>     L= gsw-LI AM= a , PM= nam.
328,329c328,329
<     L= gv AM= a , PM= p
<     L= gv-IM AM= a , PM= p
---
>     L= gv AM= a.m. , PM= p.m.
>     L= gv-IM AM= a.m. , PM= p.m.
352,353c352,353
<     L= ig AM= a , PM= p
<     L= ig-NG AM= a , PM= p
---
>     L= ig AM= A.M. , PM= P.M.
>     L= ig-NG AM= A.M. , PM= P.M.
356,357c356,357
<     L= is AM= f. , PM= e.
<     L= is-IS AM= f. , PM= e.
---
>     L= is AM= f.h. , PM= e.h.
>     L= is-IS AM= f.h. , PM= e.h.
374,375c374,375
<     L= kde AM= a , PM= p
<     L= kde-TZ AM= a , PM= p
---
>     L= kde AM= Muhi , PM= p
>     L= kde-TZ AM= Muhi , PM= p
409,410c409,410
<     L= kw AM= a , PM= p
<     L= kw-GB AM= a , PM= p
---
>     L= kw AM= a.m. , PM= p.m.
>     L= kw-GB AM= a.m. , PM= p.m.
414,415c414,415
<     L= lag AM= a , PM= p
<     L= lag-TZ AM= a , PM= p
---
>     L= lag AM= TOO , PM= MUU
>     L= lag-TZ AM= TOO , PM= MUU
435,436c435,436
<     L= luy AM= a , PM= p
<     L= luy-KE AM= a , PM= p
---
>     L= luy AM= a.m. , PM= p.m.
>     L= luy-KE AM= a.m. , PM= p.m.
459,465c459,465
<     L= mr AM= स , PM= सं
<     L= mr-IN AM= स , PM= सं
<     L= ms AM= PG , PM= p
<     L= ms-Latn AM= PG , PM= p
<     L= ms-Latn-BN AM= PG , PM= p
<     L= ms-Latn-MY AM= PG , PM= p
<     L= ms-Latn-SG AM= PG , PM= p
---
>     L= mr AM= स , PM= म.उ.
>     L= mr-IN AM= स , PM= म.उ.
>     L= ms AM= PG , PM= PTG
>     L= ms-Latn AM= PG , PM= PTG
>     L= ms-Latn-BN AM= PG , PM= PTG
>     L= ms-Latn-MY AM= PG , PM= PTG
>     L= ms-Latn-SG AM= PG , PM= PTG
474,476c474,476
<     L= nb AM= a , PM= p
<     L= nb-NO AM= a , PM= p
<     L= nb-SJ AM= a , PM= p
---
>     L= nb AM= a.m. , PM= p.m.
>     L= nb-NO AM= a.m. , PM= p.m.
>     L= nb-SJ AM= a.m. , PM= p.m.
490,491c490,491
<     L= nmg AM= a , PM= p
<     L= nmg-CM AM= a , PM= p
---
>     L= nmg AM= maná , PM= kugú
>     L= nmg-CM AM= maná , PM= kugú
515,516c515,516
<     L= ps AM= a , PM= p
<     L= ps-AF AM= a , PM= p
---
>     L= ps AM= غ.م. , PM= غ.و.
>     L= ps-AF AM= غ.م. , PM= غ.و.
527,530c527,530
<     L= qu AM= a , PM= p
<     L= qu-BO AM= a , PM= p
<     L= qu-EC AM= a , PM= p
<     L= qu-PE AM= a , PM= p
---
>     L= qu AM= a.m. , PM= p.m.
>     L= qu-BO AM= a.m. , PM= p.m.
>     L= qu-EC AM= a.m. , PM= p.m.
>     L= qu-PE AM= a.m. , PM= p.m.
572,573c572,573
<     L= si AM= පෙ , PM= ප
<     L= si-LK AM= පෙ , PM= ප
---
>     L= si AM= පෙ , PM= ප.ව.
>     L= si-LK AM= පෙ , PM= ප.ව.
576,577c576,577
<     L= sl AM= d , PM= p
<     L= sl-SI AM= d , PM= p
---
>     L= sl AM= dop. , PM= pop.
>     L= sl-SI AM= dop. , PM= pop.
582,586c582,586
<     L= so AM= a , PM= p
<     L= so-DJ AM= a , PM= p
<     L= so-ET AM= a , PM= p
<     L= so-KE AM= a , PM= p
<     L= so-SO AM= a , PM= p
---
>     L= so AM= sn. , PM= gn.
>     L= so-DJ AM= sn. , PM= gn.
>     L= so-ET AM= sn. , PM= gn.
>     L= so-KE AM= sn. , PM= gn.
>     L= so-SO AM= sn. , PM= gn.
616,617c616,617
<     L= te AM= ఉ , PM= సా
<     L= te-IN AM= ఉ , PM= సా
---
>     L= te AM= [AM] , PM= [PM]
>     L= te-IN AM= [AM] , PM= [PM]

Change-Id: Id87dd3a41b54f4d1e76535c80439e2436346a607