Use generic paths for toolchain in POWER7.

Details:
- Fixed issue #4. Thanks to Jeff Hammond for contributing changes.
Attempted to fix uninitialized variable warnings.

Details:
- Added initialization statements to various macros used in level 1m and
  1m-like operations. I wasn't able to reproduce the reported behavior,
  so hopefully this takes care of it. Thanks to Jeff Hammond for the
  report.
Added #include "arm_neon.h" to ARM gemm ukernel.

Details:
- Inserted #include "arm_neon.h" into gemm ukernel source file for
  arm/neon. Thanks to Jean-Michel Hautbois for suggesting this fix.