* fix libCom exports for things which used to be built differently
* logserver needs winsock
* errlog prefix: fix warnings on win32
* fix dll imports in ioc/db
Build lexer and parser from libCom/Makefile.
Since libCom now includes asLib.c and asLib_lex.c we must build
antelope and flex without linking them to Com. This works because
they only need epicsTempFile anyway. However make doesn't like a
subdirectory with the same name as a target object, so the antelope
source directory is now called yacc. The two main.c files were also
renamed to avoid other build problems.
Merge asHost into Com and remove mentions in CONFIG_BASE
Lots of noise since SRCS must be renamed to Com_SRCS
The new Makefile fragments in the subdirectories are incomplete and will
not work individually. Build rules are placed in a separate RULES file.
This approach keeps the instructions for building each file local and
easier to find than in a large Makefile in the parent directory.
