Fix ElfCoreDumpTest.ValidCoreFile unit test.

The ElfCoreDumpTest.ValidCoreFile unit test assumed that the number of
NT_FPREGSET / NT_PRXFPREG notes in the core dump file equals to the number of
threads of the crashed process. This assumption isn't always true as the kernel
skips filling the NT_FPREGSET / NT_PRXFPREG note of a thread if the FPU state
isn't available. The kernel indicates the availability of NT_FPREGSET /
NT_PRXFPREG via the pr_fpvalid field of the NT_PRSTATUS note. This CL modifies
the ElfCoreDumpTest.ValidCoreFile unit test to verify the number of NT_FPREGSET
and NT_PRXFPREG notes based on the pr_fpvalid field of the NT_PRSTATUS notes.

BUG=577
TEST=Run unit tests on x86 and x86_64 Linux platform.
R=vapier@chromium.org

Review URL: https://breakpad.appspot.com/1404002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1303 4c0a9323-5329-0410-9bdc-e9ce6186880e
Move build configuration to root of repository.

This is in preparation for creating GYP build files for each platform.

BUG=https://code.google.com/p/google-breakpad/issues/detail?id=575
R=mark@chromium.org

Review URL: https://breakpad.appspot.com/1414002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1304 4c0a9323-5329-0410-9bdc-e9ce6186880e