Fix the inplace name of ghc-cabal

We had inplace/bin/ghc-cabalghc-cabal
Add a "Support dynamic-too" field to the --info output

This is always "YES".
Whitespace only in StaticFlags
Update Cabal
Remove some old commented-out code in StaticFlags
Update the isStaticFlag predicate

-fspec-inline-join-points was removed in Jan 2010:
99f41975ae61fc919638aa389199b32742332eff

-fno-hi-version-check was removed in Nov 2003:
98744cef7b82e7eefbb1c6f1d8b9e28c415939c4

-dno-black-holing was removed in Aug 2011:
1c2f89535394958f75cfb15c8c5e0433a20953ed

-fruntime-types was removed in Apr 2008:
8d6bc9bf51829ea04da5f599b84114ef220f0a19

-fhardwire-lib-paths was removed in Jan 2008:
1b98179e0faf8c1ddf79c12827b24d4b7979b83e
Mark -dynamic-too as unsupported for now

It doesn't work with --make yet. Trac #7864 filed.
Update Cabal