Import portaudio-19.20111121 as wip/portaudio.

PortAudio is a free, cross platform, open-source, audio I/O library.  It
lets you write simple audio programs in 'C' that will compile and run on
many platforms including Windows, Macintosh (8,9,X), Unix (OSS), SGI, and
BeOS. PortAudio is intended to promote the exchange of audio synthesis
software between developers on different platforms, and was recently
selected as the audio component of a larger PortMusic project that includes
MIDI and sound file support.

PortAudio provides a very simple API for recording and/or playing sound
using a simple callback function.  Example programs are included that
synthesize sine waves and pink noise, perform fuzz distortion on a guitar,
list available audio devices, etc.

This is the latest stable branch (v19) of portaudio. It provides the portaudio2
library.
+portaudio (v19) - provides libportaudio2
Build with wip/portaudio instead of audio/portaudio. Requires libportaudio2
for microphone support. Added soil to PKG_SUGGESTED_OPTIONS.
Remove portaudio from TODO.
Fix alsa option. This is the only roadblock for import to HEAD as portaudio2.
Build fails here:

libtool: compile:  cc -c -mfpmath=sse -msse3 -march=native -I/usr/pkgsrc/dev/wip/portaudio/work/.buildlink/include -DPA_LITTLE_ENDIAN -I./include -I./src/common -I./src/os/unix -pthread -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\" -DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DHAVE_SYS_SOUNDCARD_H=1 -DHAVE_MACHINE_SOUNDCARD_H=1 -DSIZEOF_SHORT=2 -DSIZEOF_INT=4 -DSIZEOF_LONG=8 -DHAVE_CLOCK_GETTIME=1 -DHAVE_NANOSLEEP=1 -DPA_USE_ALSA=1 -DPA_USE_OSS=1 src/hostapi/alsa/pa_linux_alsa.c  -fPIC -DPIC -o src/hostapi/alsa/.libs/pa_linux_alsa.o
src/hostapi/alsa/pa_linux_alsa.c:176:1: warning: 'snd_pcm_sw_params_set_xfer_align' is deprecated (declared at /usr/pkgsrc/dev/wip/portaudio/work/.buildlink/include/alsa/pcm.h:1123)
src/hostapi/alsa/pa_linux_alsa.c: In function 'PaAlsa_LoadLibrary':
src/hostapi/alsa/pa_linux_alsa.c:455:1: warning: 'snd_pcm_sw_params_set_xfer_align' is deprecated (declared at /usr/pkgsrc/dev/wip/portaudio/work/.buildlink/include/alsa/pcm.h:1123)
src/hostapi/alsa/pa_linux_alsa.c: In function 'PaAlsaStreamComponent_EndProcessing':
src/hostapi/alsa/pa_linux_alsa.c:3429:34: error: 'ESTRPIPE' undeclared (first use in this function)
src/hostapi/alsa/pa_linux_alsa.c:3429:34: note: each undeclared identifier is reported only once for each function it appears in
src/hostapi/alsa/pa_linux_alsa.c: In function 'PaAlsaStreamComponent_RegisterChannels':
src/hostapi/alsa/pa_linux_alsa.c:3967:38: error: 'ESTRPIPE' undeclared (first use in this function)
gmake: *** [src/hostapi/alsa/pa_linux_alsa.lo] Error 1
*** Error code 2