* src/pic/glue.h,src/pic16/glue.h: added prototypes

* src/pic/glue.h,src/pic16/glue.h: added prototypes
* src/pic/glue.c,src/pic16/glue.c (pic1x_stringInSet,
  pic1x_emitSymbolIfNew): NEW, check for a string in a set,
  (pic14printExterns,pic14printPublics,pic16printPublics,
  pic16_printExterns): use new functions to emit symbols
  (picglue,pic16glue): emit publics before emitting externs
* src/pic/gen.c,src/pic16/gen.c (genFunction): remember the names of
  locally defined functions to avoid bug #1443651
* support/regression/tests/bug-716242.c: removed pic16 workaround
* support/regression/ports/pic16/spec.mk: ignore errors during build

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@4243 4a8a32a2-be11-0410-ad9d-d568d2c75423