Add longdouble Port::nan and Port::infinity.
Align -deps command line usage with rest of output
Merge pull request #2238 from eco/patch-1

[trivial] Align -deps command line usage with rest of output
% on the wrong side of -cov usage
Merge pull request #2241 from eco/patch-2

[embarrassingly trivial] % on the wrong side of -cov usage docs
preallocate buffer sizes
Merge pull request #2242 from WalterBright/set_outbuf_size

preallocate buffer sizes
allocate in 16 byte chunks
remove old STRINGTABLE code
Merge pull request #2244 from WalterBright/remove_STRINGTABLE

remove old STRINGTABLE code
Merge pull request #2243 from WalterBright/outbuf_alloc_size

allocate in 16 byte chunks
these should be statically allocated
Merge pull request #2199 from ibuclaw/ldport

Use longdouble for Port::nan and Port::infinity.
Merge pull request #2245 from WalterBright/outbuf_static

these should be statically allocated
add support for gprof
Merge pull request #2249 from WalterBright/add-PROFILE

add support for gprof