Fixes lp:999167

The callbackRequest() routine can be called from an ISR,
so use epicsInterruptContextMessage() to print errors.

This makes the uninitilized value not the Run state.

Using COMMENT the ECHO command drops the whole line under -s,
whereas using NOP (':') only drops up to the next ';' terminator.

Delete spurious global symbols
Remove unnecessary casts
Fix (c) headers
Added missing #include guard
Remove unnecessary #includes
Prettified.

Now works properly on Darwin where the version number comes
before the .dylib extension.  This also makes Windows-specific
conditional tests fully generic.

From Dirk Zimoch.

Update record timestamp before calling db_post_events()

This is really a workaround for a Win32/MinGW bug in sscanf, which
will only set the %n argument for the format "%u %n" when there is
a space following the unsigned number.

This changes the IOC's behavior very slightly.

Report throw from first call to epicsTime::getCurrent().
Reorganized test order so a bad time provider doesn't stop
all tests from being run.  Also cleaned up a few extraneous
variables.

Some of the isnan(Inf) tests were failing on mingw.
This change doesn't fix them, it adds related examples.

Makes it easy for users to select which compiler to use.

Apparently this hasn't been needed for quite a while.

This test fails if the cwd is not writable, but on vxWorks the
fault appears at the fclose() not the fopen() line. The code
now detects this and tells the user what's probably wrong.

Windows stack sizes were the same as vxWorks - tiny.
The stack sizes are now multiples of sizeof(void*).
On 32-bit systems they give 256KB, 512KB and 1MB;
64-bit systems get twice those numbers.

Fixes lp:903448

It was calling ca_add_event(), which is a deprecated API.

Clients try to use long string support to fetch DBF_STRING
fields use DBF_CTRL_CHAR with a 1-element array, but the IOC
was rejecting that.  This permits it, and also ensures that
the resulting strings are zero-terminated.

Fixes lp:907761

Merged J. Lewis Muir's fix for comments introduced by macro.
Added fixes to allow comments to be indented too, which used
to work if the '#' was followed by white-space or any argument
separator character.

The handling of comment lines is only performed before macro
expansion, thus lines with macros that expand to comment lines will
not be correctly handled as comment lines.

By chance this kind of worked sometimes because a "#" command that
does nothing is internally added to the command registry to make it
show up in the help output.  Relying on this is broken.  Furthermore,
if the line starts with '#' followed by a non-separator character
(e.g. "##", "#whatever", etc.) it will not work (i.e. it will produce
a command-not-found error).

This fix checks to see if the first character of the line after macro
expansion is '#'.  If it is, it considers the line to be a comment.

Reported by Eric.

This allows the same version of Base to be used from both RHEL5 and RHEL6
for example; they use different Perl versions which are not compatible at
the ABI level.

We were adding it to OP_SYS_CFLAGS but if HOST_OPT=NO
you then get two -g options on the gcc command line.

Most shells strip the single-quote chars from arguments, but on
win32-x86 this is not happening so we need to do it ourselves.
The single quotes are important to prevent un-escaping of things
that shouldn't be unescaped.

The finite() function is provided in glibc but not in uClibc.
C99 requires isfinite() to be a macro, so we can test for it
and define our own finite() macro in osi/os/posix/epicsMath.h

* Default IOS_VERSION to 5.0
* Allow ARMv6 and ARMv7 universal binaries by setting ARCH_CLASS
* Switch from g++ to clang++