Update to GCC4.8
Merge pull request #509 from wolfmanjm/upstreamedge

fix panel directory navigation
Merge remote-tracking branch 'upstream/edge' into update/gcc4.8
adamgr fix to win_install.cmd
update firmware.bin to binary built with new compiler
fix strange bug that happens with new compiler
Add directory indicator to mbed dirent
append / to directories in panel
speed up directory listing in panel
add / to directories displayed with ls
update firmware.bin
Merge branch 'upstreamedge' into update/gcc4.8
Merge pull request #512 from wolfmanjm/upstreamedge

add crnl to end of M503 to flush in some cases
Merge remote-tracking branch 'upstream/edge' into update/gcc4.8
Merge pull request #513 from Smoothieware/update/gcc4.8

Update/gcc4.8
Force top level files to be directories