common local change for my development

MCE testing purpose
- Enable MCG_SER_P

Developing purpose
- adding -fno-inline option to BUILD_CFLAGS
- don't append '+' for kernel name
- append '<tag>-00000-g<commit id>' even if current HEAD is on the tag
- enable FAULT_INJECTION_STACKTRACE_FILTER for x86_64

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>