Rename BuildToolsPath to BuildToolsPathInternal for clarity

Author: Ericson2314

cabal-testsuite/PackageTests/BuildToolsPath/A.hs renamed to cabal-testsuite/PackageTests/BuildToolsPathInternal/A.hs

@@ -1,4 +1,4 @@
-name:                build-tools-path
+name:                build-tools-path-internal
 version:             0.1.0.0
 synopsis:            Checks build-tools are put in PATH
 license:             BSD3
@@ -20,6 +20,6 @@ library
 
 executable             hello-world
   main-is:             Hello.hs
-  build-depends:       base, build-tools-path
+  build-depends:       base, build-tools-path-internal
   default-language:    Haskell2010
   hs-source-dirs:      hello