I3 wm

Adds formulas for the i3 tiling window manager and the startup-notification library it requires.
From 01.make.cc

```
clang called with: -DI3_VERSION="4.8 (2014-06-15, branch \"4.8\")" -DMAJOR_VERSION=4 -DMINOR_VERSION=8 -DPATCH_VERSION=0 -DSYSCONFDIR="/usr/local/Cellar/i3/4.8/etc" -DI3__FILE__=__FILE__ -DPANGO_SUPPORT=1 -I/opt/X11/include -I/opt/X11/include -I/opt/X11/include -I/opt/X11/include -I/opt/X11/include -I/opt/X11/include -I/opt/X11/include -I/opt/X11/include -I/opt/X11/include -I/usr/local/Cellar/glib/2.40.0_1/include/glib-2.0 -I/usr/local/Cellar/glib/2.40.0_1/lib/glib-2.0/include -I/usr/local/opt/gettext/include -I/usr/local/Cellar/libpng/1.6.12/include/libpng16 -I/usr/local/Cellar/freetype/2.5.3_1/include/freetype2 -I/usr/local/Cellar/fontconfig/2.11.1/include -I/usr/local/Cellar/freetype/2.5.3_1/include/freetype2 -I/usr/local/Cellar/pixman/0.32.6/include/pixman-1 -I/usr/local/Cellar/cairo/1.12.16_1/include/cairo -I/opt/X11/include -D_REENTRANT -I/usr/local/Cellar/glib/2.40.0_1/include/glib-2.0 -I/usr/local/Cellar/glib/2.40.0_1/lib/glib-2.0/include -I/usr/local/opt/gettext/include -I/usr/local/Cellar/libpng/1.6.12/include/libpng16 -I/usr/local/Cellar/freetype/2.5.3_1/include/freetype2 -I/usr/local/Cellar/fontconfig/2.11.1/include -I/usr/local/Cellar/freetype/2.5.3_1/include/freetype2 -I/usr/local/Cellar/pixman/0.32.6/include/pixman-1 -I/usr/local/Cellar/cairo/1.12.16_1/include/cairo -I/usr/local/Cellar/pango/1.36.5/include/pango-1.0 -I/opt/X11/include -I/usr/local/Cellar/yajl/2.1.0/include -I/usr/local/include -I/usr/local/Cellar/startup-notification/0.12/include/startup-notification-1.0 -std=c99 -Wall -Wunused-value -Iinclude -pipe -gdwarf-2 -g3 -x c-header include/all.h -o include/all.h.pch
superenv removed:  -I/opt/X11/include -I/opt/X11/include -I/opt/X11/include -I/opt/X11/include -I/opt/X11/include -I/opt/X11/include -I/opt/X11/include -I/opt/X11/include -I/opt/X11/include -I/opt/X11/include -I/opt/X11/include -I/usr/local/include -Wall -Wunused-value -gdwarf-2 -g3
superenv added:    -w -Os -march=native -isystem/usr/local/include -isystem/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/libxml2 -isystem/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/apache2 -isystem/opt/X11/include -isystem/opt/X11/include/freetype2 -isystem/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/OpenGL.framework/Versions/Current/Headers -I/usr/local/opt/icu4c/include -L/usr/local/opt/gettext/lib -L/usr/local/opt/libffi/lib -L/usr/local/opt/icu4c/lib -L/usr/local/lib -L/opt/X11/lib -L/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/OpenGL.framework/Versions/Current/Libraries -Wl,-headerpad_max_install_names
superenv executed: clang -pipe -w -Os -march=native -DI3_VERSION="4.8 (2014-06-15, branch \"4.8\")" -DMAJOR_VERSION=4 -DMINOR_VERSION=8 -DPATCH_VERSION=0 -DSYSCONFDIR="/usr/local/Cellar/i3/4.8/etc" -DI3__FILE__=__FILE__ -DPANGO_SUPPORT=1 -I/usr/local/Cellar/glib/2.40.0_1/include/glib-2.0 -I/usr/local/Cellar/glib/2.40.0_1/lib/glib-2.0/include -I/usr/local/opt/gettext/include -I/usr/local/Cellar/libpng/1.6.12/include/libpng16 -I/usr/local/Cellar/freetype/2.5.3_1/include/freetype2 -I/usr/local/Cellar/fontconfig/2.11.1/include -I/usr/local/Cellar/pixman/0.32.6/include/pixman-1 -I/usr/local/Cellar/cairo/1.12.16_1/include/cairo -D_REENTRANT -I/usr/local/Cellar/pango/1.36.5/include/pango-1.0 -I/usr/local/Cellar/yajl/2.1.0/include -I/usr/local/Cellar/startup-notification/0.12/include/startup-notification-1.0 -std=c99 -Iinclude -pipe -x c-header include/all.h -o include/all.h.pch -isystem/usr/local/include -isystem/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/libxml2 -isystem/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/apache2 -isystem/opt/X11/include -isystem/opt/X11/include/freetype2 -isystem/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/OpenGL.framework/Versions/Current/Headers -I/usr/local/opt/gettext/include -I/usr/local/opt/icu4c/include -L/usr/local/opt/gettext/lib -L/usr/local/opt/libffi/lib -L/usr/local/opt/icu4c/lib -L/usr/local/lib -L/opt/X11/lib -L/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/OpenGL.framework/Versions/Current/Libraries -Wl,-headerpad_max_install_names
```

When run, this generates:

```
clang: error: cannot specify -o when generating multiple output files
```