#2768 sblim-cmpi-nfsv3 C99 compatibility in lexer/parser integration

[Florian Weimer]

This patch introduces a new header file, lexparse.h, to provide function prototypes used for lexer/parser integration, and includes the new header in the lexers and parsers. This helps to avoid implicit function declarations and build issues with future compilers.

Related to:

• https://fedoraproject.org/wiki/Changes/PortingToModernC
• https://fedoraproject.org/wiki/Toolchain/PortingToModernC