Add NOINLINE for hs-boot functions
This fixes Trac #10083. The key change is in TcBinds.tcValBinds, where we construct the prag_fn. With this patch we add a NOINLINE pragma for any functions that were exported by the hs-boot file for this module. See Note [Inlining and hs-boot files], and #10083, for details. The commit touches several other files becuase I also changed the representation of the "pragma function" from a function TcPragFun to an environment, TcPragEnv. This makes it easer to extend during construction.