ccache: use install_symlink
pigz: use install_symlink
putmail: use install_symlink
vim: use install_symlink
Filter -fno-delete-null-pointer-checks for clang

Fixes #27836.
qrupdate, slicot: improved BLAS/LAPACK support

qrupdate.rb: added OpenBLAS option. Compiled with -ff2c flag for
    -framework vecLib to ensure compatibility.
slicot.rb: removed all mention of BLAS/LAPACK, because only the static
    library is built.

Closes #27773.

Signed-off-by: Misty De Meo <mistydemeo@gmail.com>
pypy: use install_symlink
re2: use install_symlink
shapelib: use install_symlink, drop inreplace
liblinear: use install_symlink
libsvm: use install_symlink
guile: use install_symlink
ksh: use install_symlink

As a bonus, fix the broken ksh.1 symlink.
Don't load the full debugger when readline is the formula being installed

Fixes #27842.
lesstif: use Homebrew's freetype
grace: lower optimization to fix miscompile with clang 3.4

cf. #27840.
scala 2.10.4

Closes #27844.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
scala 2.11.0-RC3

Closes #27845.
lz4 r116

This release addresses all the quick fixes in this formula.
lz4: update r116 bottle.

Closes #27846.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>