Revert some changes to the parser Makefile
Revert some changes to the parser Makefile

I was over-eager in improving the parser Makefile and committed some
rules that caused automatic rebuilds when the parser or lexer changed.
We don't want this to happen because of the requirement on bison 2.5.

CoryMcCartan/chapel,hildeth/chapel,hildeth/chapel,chizarlicious/chapel,hildeth/chapel,chizarlicious/chapel,chizarlicious/chapel,chizarlicious/chapel,CoryMcCartan/chapel,hildeth/chapel,hildeth/chapel,chizarlicious/chapel,CoryMcCartan/chapel,CoryMcCartan/chapel,hildeth/chapel,hildeth/chapel,CoryMcCartan/chapel,CoryMcCartan/chapel,chizarlicious/chapel,CoryMcCartan/chapel,chizarlicious/chapel