Use runfiles-relative paths for tools/objc shell scripts

--
MOS_MIGRATED_REVID=112478681

src/tools/xcode/actoolwrapper/actoolwrapper.sh

diff --git a/src/tools/xcode/actoolwrapper/actoolwrapper.sh b/src/tools/xcode/actoolwrapper/actoolwrapper.sh
index 1c3b0ce..c0d2197 100755
--- a/src/tools/xcode/actoolwrapper/actoolwrapper.sh
+++ b/src/tools/xcode/actoolwrapper/actoolwrapper.sh
@@ -21,10 +21,8 @@
 
 set -eu
 
-REALPATH="$0.runfiles/external/bazel_tools/tools/objc/realpath"
-if [ ! -e $REALPATH ]; then
-  REALPATH=tools/objc/realpath
-fi
+REALPATH=$0.runfiles/external/bazel_tools/tools/objc/realpath
+WRAPPER=$0.runfiles/external/bazel_tools/tools/objc/xcrunwrapper.sh
 
 OUTZIP=$($REALPATH "$1")
 shift 1
@@ -54,11 +52,6 @@
   LASTARG="$i"
 done
 
-WRAPPER="$0.runfiles/external/bazel_tools/tools/objc/xcrunwrapper.sh"
-if [ ! -e $WRAPPER ]; then
-  WRAPPER=tools/objc/xcrunwrapper.sh
-fi
-
 # If we are running into problems figuring out actool issues, there are a couple
 # of env variables that may help. Both of the following must be set to work.
 #   IBToolDebugLogFile=<OUTPUT FILE PATH>

src/tools/xcode/ibtoolwrapper/ibtoolwrapper.sh

diff --git a/src/tools/xcode/ibtoolwrapper/ibtoolwrapper.sh b/src/tools/xcode/ibtoolwrapper/ibtoolwrapper.sh
index f8a8074..8271399 100755
--- a/src/tools/xcode/ibtoolwrapper/ibtoolwrapper.sh
+++ b/src/tools/xcode/ibtoolwrapper/ibtoolwrapper.sh
@@ -25,10 +25,8 @@
 
 set -eu
 
-REALPATH="$0.runfiles/external/bazel_tools/tools/objc/realpath"
-if [ ! -e $REALPATH ]; then
-  REALPATH=tools/objc/realpath
-fi
+REALPATH=$0.runfiles/external/bazel_tools/tools/objc/realpath
+WRAPPER=$0.runfiles/external/bazel_tools/tools/objc/xcrunwrapper.sh
 
 OUTZIP=$($REALPATH "$1")
 ARCHIVEROOT="$2"
@@ -54,11 +52,6 @@
   fi
 done
 
-WRAPPER="$0.runfiles/external/bazel_tools/tools/objc/xcrunwrapper.sh"
-if [ ! -e $WRAPPER ]; then
-  WRAPPER=tools/objc/xcrunwrapper.sh
-fi
-
 # If we are running into problems figuring out ibtool issues, there are a couple
 # of env variables that may help. Both of the following must be set to work.
 #   IBToolDebugLogFile=<OUTPUT FILE PATH>

src/tools/xcode/momcwrapper/momcwrapper.sh

diff --git a/src/tools/xcode/momcwrapper/momcwrapper.sh b/src/tools/xcode/momcwrapper/momcwrapper.sh
index 82a66c8..4387873 100755
--- a/src/tools/xcode/momcwrapper/momcwrapper.sh
+++ b/src/tools/xcode/momcwrapper/momcwrapper.sh
@@ -22,10 +22,8 @@
 
 set -eu
 
-REALPATH="$0.runfiles/external/bazel_tools/tools/objc/realpath"
-if [ ! -e $REALPATH ]; then
-  REALPATH=tools/objc/realpath
-fi
+REALPATH=$0.runfiles/external/bazel_tools/tools/objc/realpath
+WRAPPER=$0.runfiles/external/bazel_tools/tools/objc/xcrunwrapper.sh
 
 OUTZIP=$($REALPATH "$1")
 NAME="$2"
@@ -33,11 +31,6 @@
 TEMPDIR=$(mktemp -d -t momcZippingOutput)
 trap "rm -rf \"$TEMPDIR\"" EXIT
 
-WRAPPER="$0.runfiles/external/bazel_tools/tools/objc/xcrunwrapper.sh"
-if [ ! -e $WRAPPER ]; then
-  WRAPPER=tools/objc/xcrunwrapper.sh
-fi
-
 $WRAPPER momc "$@" "$TEMPDIR/$NAME"
 
 # Need to push/pop tempdir so it isn't the current working directory

src/tools/xcode/swiftstdlibtoolwrapper/swiftstdlibtoolwrapper.sh

diff --git a/src/tools/xcode/swiftstdlibtoolwrapper/swiftstdlibtoolwrapper.sh b/src/tools/xcode/swiftstdlibtoolwrapper/swiftstdlibtoolwrapper.sh
index 24bf573..86f8b58 100755
--- a/src/tools/xcode/swiftstdlibtoolwrapper/swiftstdlibtoolwrapper.sh
+++ b/src/tools/xcode/swiftstdlibtoolwrapper/swiftstdlibtoolwrapper.sh
@@ -21,10 +21,8 @@
 
 set -eu
 
-REALPATH="$0.runfiles/external/bazel_tools/tools/objc/realpath"
-if [ ! -e $REALPATH ]; then
-  REALPATH=tools/objc/realpath
-fi
+REALPATH=$0.runfiles/external/bazel_tools/tools/objc/realpath
+WRAPPER=$0.runfiles/external/bazel_tools/tools/objc/xcrunwrapper.sh
 
 OUTZIP=$($REALPATH "$1")
 shift 1
@@ -33,11 +31,6 @@
 
 FULLPATH="$TEMPDIR/Frameworks"
 
-WRAPPER="$0.runfiles/external/bazel_tools/tools/objc/xcrunwrapper.sh"
-if [ ! -e $WRAPPER ]; then
-  WRAPPER=tools/objc/xcrunwrapper.sh
-fi
-
 $WRAPPER swift-stdlib-tool --copy --verbose --destination "$FULLPATH" "$@"
 
 # Need to push/pop tempdir so it isn't the current working directory