Merge pull request #5 from stepchud/osx

Fixes sorted by column crashing htop on osx
Using sysctl for swap statistics.
Swap: use die() instead of printf() for errors.
Battery statistics using the I/O kit.
lookup usernames, fix mem leak in userlist panel
Merge remote-tracking branch 'remotes/GAFFAjonas/osx' into osx
Crasher fix. Merged patch by Rainer Suhm from upstream SVN r163.
link IOKit and CoreFoundation frameworks
process memory size fixed
Added buffers & cached memory
fixed merge conflict
fix deprecation warning
fixed building on mac
[cputemp] functions correctly
[cpu temp] fixes
[cpu temp] just in case some bozo runs MakeHeader.py
code generation causes more problems than it solves
[cpu temp] fixed trailing }
Create the m4 dir if it doesn't exist.

aclocal version 1.13 fails with the following error:

aclocal: error: couldn't open directory 'm4': No such file or directory

Creating the m4 directory before executing aclocal fixes the error.
Merge pull request #1 from benburkert/patch-1

Create the m4 dir if it doesn't exist.