ZWNJ shouldn't be used for implementing அ as delinking symbol in TamilNet99 keyboard

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The Tamil Nadu Government Order on Tamil Unicode says:
"The ZWNJ (U+200C) shall be treated as an invalid code point in official 
documents except where it is used to create the disjoint form for kssa series 
as in க்‌ஷ (U+0B95,U+0BCD,U+200C,U+0BB7)."

Hence for implementing அ as delinking symbol we shouldn't be using ZWNJ as is 
done currently. An alternative is to remember the pressing of அ after a 
consonant symbol and, use it to disable the combining of any other stroke with 
the previous stroke. (i.e. remember the pressing of அ after a consonant 
symbol and, use it to disable the joining of any vowel with the previous 
consonant, as well as for disabling automatic pulli feature.)

Original issue reported on code.google.com by shiv...@gmail.com on 24 Jun 2014 at 6:19

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Original comment by shiv...@gmail.com on 24 Jun 2014 at 6:26

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Original comment by shiv...@gmail.com on 27 Jun 2014 at 4:30

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