shell: use more portable way to ensure bash

pointed out by jjlauer (https://github.com/jjlauer)

android/compile-ffmpeg.sh

@@ -1,4 +1,4 @@
-#! /bin/sh
+#! /usr/bin/env bash
 
 # This script is based on projects below
 # https://github.com/yixia/FFmpeg-Android

android/compile-ijk.sh

@@ -1,4 +1,4 @@
-#! /bin/sh
+#! /usr/bin/env bash
 
 cd ijkmediaplayer
 cd jni

android/ndk-stack-ijkmp.sh

@@ -1,3 +1,3 @@
-#! /bin/sh
+#! /usr/bin/env bash
 
 adb logcat | ndk-stack -sym ijkmediaplayer/obj/local/armeabi-v7a

android/setup-as-commiter.sh

@@ -1,4 +1,4 @@
-#! /bin/sh
+#! /usr/bin/env bash
 
 cd ffmpeg-armv7a
 

android/sync-mirrors.sh

@@ -1,4 +1,4 @@
-#! /bin/sh
+#! /usr/bin/env bash
 
 cd ffmpeg-armv7a
 

init-android.sh

@@ -1,4 +1,4 @@
-#! /bin/sh
+#! /usr/bin/env bash
 
 IJK_FFMPEG_UPSTREAM=git://git.videolan.org/ffmpeg.git
 IJK_FFMPEG_FORK=https://github.com/bbcallen/FFmpeg.git

init-ios.sh

@@ -1,4 +1,4 @@
-#! /bin/sh
+#! /usr/bin/env bash
 
 IJK_FFMPEG_UPSTREAM=git://git.videolan.org/ffmpeg.git
 IJK_FFMPEG_FORK=https://github.com/bbcallen/FFmpeg.git

ios/compile-ffmpeg.sh

@@ -1,4 +1,4 @@
-#! /bin/sh
+#! /usr/bin/env bash
 
 #----------
 # modify for your build tool

ios/tools/do-compile-ffmpeg.sh

@@ -1,4 +1,4 @@
-#! /bin/sh
+#! /usr/bin/env bash
 
 # This script is based on projects below
 # https://github.com/kolyvan/kxmovie

tools/ffmpeg-common-profiles.sh

@@ -1,4 +1,4 @@
-#! /bin/sh
+#! /usr/bin/env bash
 
 #--------------------
 # Standard options:

tools/pull-repo-base.sh

@@ -1,4 +1,4 @@
-#! /bin/sh
+#! /usr/bin/env bash
 
 REMOTE_REPO=$1
 LOCAL_WORKSPACE=$2

tools/pull-repo-ref.sh

@@ -1,4 +1,4 @@
-#! /bin/sh
+#! /usr/bin/env bash
 
 REMOTE_REPO=$1
 LOCAL_WORKSPACE=$2

tools/setup-as-commiter.sh

@@ -1,4 +1,4 @@
-#! /bin/sh
+#! /usr/bin/env bash
 
 git remote add gitcafe [email protected]:bbcallen/ijkplayer.git
 git remote add oschina [email protected]:bbcallen/ijkplayer.git

tools/sync-mirrors.sh

@@ -1,4 +1,4 @@
-#! /bin/sh
+#! /usr/bin/env bash
 
 git push origin --all --follow-tags
 git push gitcafe --all --follow-tags