Squashed 'apf/' changes from ba0a94a..90ae1e2

90ae1e2 NEWS update
28567b1 Add Doxygen documentation for mextools.h
f16dedd (SSR) APF examples Makefile: changes to FLEXTPATH handling
9c21173 (SSR) Make DefaultInput constructor explicit
e291a9b (SSR) More docs for delay_is_valid()
fc40174 (SSR) Add functionality to correct invalid delays for delayline
84d77a1 (SSR) parameter_map: add variadic constructor with perfect forwarding
a37ce60 (SSR) jack_dynamic_outputs: use POSIX instead of dummy thread policy
7ce89a9 (SSR) APF examples: add automatic connections ...
1f206e1 (SSR) Remove has_begin_and_end from simpleprocessor
6fe038e (SSR) Fix old bug in simpleprocessor
252be19 (SSR) Convolver: check for all zeros in prepare_partition()
d032eff (SSR) Bugfix in convolver
4d35f30 (SSR) apf::parameter_map overhaul
656cb8e (SSR) Makefile.dependencies: now arbitrary binary extensions are possible
d9e7c45 (SSR) Add header file for selecting the default thread policy
e9608f8 (SSR) Fix wrong use of "using"
eea3d89 (SSR) Get default number of threads automatically
45712a2 (SSR) Change the way of using "using"
5163b46 (SSR) Use private inheritance + "using"
055aff3 (SSR) MEX: Add macro APF_MEX_ERROR_ONE_OPTIONAL_OUTPUT
b18163b (SSR) Add example showing how to make JACK connections
9d31291 (SSR) S2A()/S2RV(): add overloads for strings (which don't "eat" whitespace)
39d6c26 (SSR) Make S2A() less general (and much simpler)
d9df28b (SSR) Add macro APF_MEX_ERROR_SAME_NUMBER_OF_ROWS
5eaf7f3 (SSR) mextools: add a few more helper macros
670386a (SSR) mextools: add conversion from struct to std::map of strings
f485db5 (SSR) parameter_map: add constructor from std::map
e1a7b63 (SSR) Change copyright year to 2014
a087775 (SSR) Move generic helper functions for mex-files to APF
0ec221b (SSR) Minor fixes for libc++ compatibility
a0d6849 (SSR) stringtools: change handling of whitespace
506d856 (SSR) More unit tests for stringtools
e4a2c05 (SSR) Add stringtools testcase without whitespace
d91b59e (SSR) More includes to avoid clang warnings
6533ee8 (SSR) fixed_vector: de-activate ctor from size and allocator

git-subtree-dir: apf
git-subtree-split: 90ae1e27e595a7381ae230e21d6beb8b93830e0d
Update to APF version 0.2.1

Merge commit '800e880068565a47b1af5dd421c0cb10fda2cc7b'

Conflicts:
	apf/apf/mextools.h