sc class library: events: allocWrite type

writable buffer allocation event type for DiskOut.ar(..)
minor tweaks to build scsynth
Use a more meaningful CPP flag for fpclassify

Old versions of Visual C++ didn't provide fpclassify, but
newer (VC2013) do. Instead of using a MSVC flag, this is changed
to SC_PROVIDE_FPCLASSIFY to be more specific.
Reset fix for stdbool

Use of bool is now supported on MS VC compilers (v. 2013).
Retain whitespace in docstring
Merge pull request #1035 from maedoc/win64build

Small tweaks required for building libscsynth for Win 64-bit
Merge pull request #1017 from vividsnow/patch-1

sc class library: events: allocWrite type
Merge pull request #1039 from miguel-negrao/master

class library: Env#*step easier creation of step envelopes
Classlib: Change NetAddr's default port to nil

This makes it easier to create a NetAddr to match any port from a given IP.
Merge pull request #1040 from jamshark70/topic/NetAddr-default-port

Classlib: Change NetAddr's default port to nil
Classlib: fixed PatternProxy constrainStream so defaultQuant works
Merge pull request #1043 from d0kt0r0/master

Classlib: fixed PatternProxy constrainStream so defaultQuant works
NRT rendering: remove fixed 8192-byte limit for messages (thanks rd--)
fix regression in Object.dup(array), thanks Nao and Julian
fix bug in binary operator ring4 - thanks Nao Yonamine
syntax highlight and allow running code from schelp files