oyacc is a portable yacc implementation that depends on libc only,
making it useful for bootstrap purposes.
* gnu/packages/oyacc.scm (oyacc): New variable.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add new module.
Change-Id: I41c366fc30128015e77a6eb95d5aafea4143a452
Signed-off-by: Efraim Flashner <efraim@flashner.co.il>
