* support/Util/SDCCerr.c,

* support/Util/SDCCerr.c,
* src/SDCCast.h,
* src/SDCCast.c (createCase, createDefault, decorateType),
* src/SDCClabel.c (labelUnreach),
* src/SDCC.y (labeled_statement, jump_statement): More improvements
to error messages.
* support/Util/SDCCerr.c (werrorfl): fixed a non-standard declaration
(with thanks to Stas Sergeev)
* device/include/time.h,
* device/lib/time.c (CheckTime): suppress unreachable code warning

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@3063 4a8a32a2-be11-0410-ad9d-d568d2c75423