server/plugins: remove altivec-specific code

Signed-off-by: Tim Blechmann <tim@klingt.org>
scsynth: simplify setting of denormal flags

Signed-off-by: Tim Blechmann <tim@klingt.org>
cmake: link pthreads libraries

 - fix build error on Archlinux
 - re #740
remove unless var declaration from example
adding 'Contributing with with the documentation' topic
little readability improvements
schelp literals: jmc degree notation

Signed-off-by: Tim Blechmann <tim@klingt.org>
Merge pull request #732 from timblechmann/topic/simplify_cpu_dispatching

Topic/simplify cpu dispatching
scsynth: compile fixes

Signed-off-by: Tim Blechmann <tim@klingt.org>
scsynth: codeaudio compile fix

Signed-off-by: Tim Blechmann <tim@klingt.org>
Convolution.cpp code cleanups, e.g. rename some variables to match sclang code
Convolution2: cannot run if buffer not accessible, so refuse
Convolution2: fix ability to use kernel smaller than framesize
This commit should complete the bugfix intended in 9b0b164.
Convolution2: if fft would breach SC_FFT_MAXSIZE, do not run, recommend PartConv instead
qtcollider: add QListView:-selection setter
Update WritingHelp.schelp

adds -recursive to file
Update Pcollect.schelp

remove identation
Merge pull request #742 from gusano/link_pthreads_libs

cmake: link pthreads libraries
Merge pull request #746 from hems/doc_updates

Adding "Contributing with the documentation" to "Writing Help.schelp" file
Convolution2: fix helpfile re max FFT size, thanks Jo Anderson