After making the build on macOS silent on commit 310ae03, the build was broken on macOS lesser than 10.12 (Sierra). This commit conditionally checks the version the of the SDK before using the defined values for silent build. Fixes #66.

Ported from Plan 9 2013-05-21. https://github.com/0intro/plan9/commit/b377a116d132865c011a3fb3ea76528ffd32963f Closes #16.

On FreeBSD, the Chromium executable is called chrome. Fixes #108.

Fixes #78.

Rename following .cvsignore files to .gitkeep since they are required by the build (directories must exist before build): - bin/fossil/.gitkeep - bin/fs/.gitkeep - bin/venti/.gitkeep Change-Id: I9c2865058480cffb3a4613f25e2eca1f7e5578c0

Change-Id: I060a8ce1456ad07fd62740b7a0d27256ed094d8a

Fixes #15.

plsvg.c:291:21: warning: variable ‘y2’ set but not used plsvg.c:291:17: warning: variable ‘x2’ set but not used

Fixes #58.