Remove addHook

Just use bash arrays directly. I.e.

  addHook preConfigure myPreConfigure

is now

  preConfigureHooks+=(myPreConfigure)

pkgs/build-support/setup-hooks/compress-man-pages.sh

@@ -1,4 +1,4 @@
-addHook fixupOutput 'if [ -z "$dontGzipMan" ]; then compressManPages "$prefix"; fi'
+fixupOutputHooks+=('if [ -z "$dontGzipMan" ]; then compressManPages "$prefix"; fi')
 
 compressManPages() {
     local dir="$1"

pkgs/build-support/setup-hooks/patch-shebangs.sh

@@ -5,7 +5,7 @@
 # rewritten to /nix/store/<hash>/bin/python.  Interpreters that are
 # already in the store are left untouched.
 
-addHook fixupOutput 'if [ -z "$dontPatchShebangs" ]; then patchShebangs "$prefix"; fi'
+fixupOutputHooks+=('if [ -z "$dontPatchShebangs" ]; then patchShebangs "$prefix"; fi')
 
 patchShebangs() {
     local dir="$1"

pkgs/build-support/setup-hooks/strip.sh

@@ -1,6 +1,6 @@
 # This setup hook strips libraries and executables in the fixup phase.
 
-addHook fixupOutput _doStrip
+fixupOutputHooks+=(_doStrip)
 
 _doStrip() {
     if [ -z "$dontStrip" ]; then