make ghc-pwd-bindist script /bin/sh compatible for Solaris

http://www.haskell.org/ghc/dist/7.8.1-rc1/ghc-7.8.20140130-i386-unknown-solaris2.tar.bz2 has a ghc-pwd-bindist script containing

{{{ #!/bin/sh export LD_LIBRARY_PATH="libraries/directory/dist-install/build:libraries/unix/dist-install/build:libraries/time/dist-install/build:libraries/old-locale/dist-install/build:libraries/filepath/dist-install/build:libraries/bytestring/dist-install/build:libraries/deepseq/dist-install/build:libraries/array/dist-install/build:libraries/base/dist-install/build:libraries/integer-gmp/dist-install/build:libraries/ghc-prim/dist-install/build:rts/dist/build:$LD_LIBRARY_PATH" exec "utils/ghc-pwd/dist-install/build/tmp/ghc-pwd" ${1+"$@"} }}}

that fails during configure under Solaris with:

checking for path to top of build tree... utils/ghc-pwd/dist-install/build/tmp/ghc-pwd-bindist: LD_LIBRARY_PATH=libraries/directory/dist-install/build:libraries/unix/dist-install/build:libraries/time/dist-install/build:libraries/old-locale/dist-install/build:libraries/filepath/dist-install/build:libraries/bytestring/dist-install/build:libraries/deepseq/dist-install/build:libraries/array/dist-install/build:libraries/base/dist-install/build:libraries/integer-gmp/dist-install/build:libraries/ghc-prim/dist-install/build:rts/dist/build:: is not an identifier
configure: error: cannot determine current directory

see more under http://www.haskell.org/pipermail/glasgow-haskell-users/2014-February/024669.html

Trac metadata

Trac field	Value
Version	7.8.1-rc1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Build System
Test case
Differential revisions
BlockedBy
Related
Blocking
CC	kgardas
Operating system	Unknown/Multiple
Architecture