RFR: 8278260: JavaFX shared libraries not stripped on Linux or macOS [v2]

[Kevin Rushforth]

> Build change to strip the non-global symbols from native shared libraries on Linux and macOS by running `strip -x`, unless doing a `-PCONF=DebugNative` build.
> 
> Here is a before / after size comparison. All sizes in KBytes:
> 
> ### Linux
> 
> | Native Library | Current | Stripped |
> | --------------- | --------- | -------- |
> | libavplugin-54.so | 52 | 48 |
> | libavplugin-56.so | 52 | 48 |
> | libavplugin-57.so | 52 | 48 |
> | libavplugin-ffmpeg-56.so | 52 | 48 |
> | libavplugin-ffmpeg-57.so | 52 | 48 |
> | libavplugin-ffmpeg-58.so | 52 | 48 |
> | libdecora_sse.so | 76 | 72 |
> | libfxplugins.so | 56 | 52 |
> | libglass.so | 16 | 12 |
> | libglassgtk2.so | 932 | 324 |
> | libglassgtk3.so | 932 | 324 |
> | libgstreamer-lite.so | 2,280 | 2,100 |
> | libjavafx_font.so | 20 | 16 |
> | libjavafx_font_freetype.so | 28 | 28 |
> | libjavafx_font_pango.so | 28 | 24 |
> | libjavafx_iio.so | 148 | 140 |
> | libjfxmedia.so | 2,048 | 516 |
> | libjfxwebkit.so | 106,696 | 88,428 |
> | libprism_common.so | 8 | 8 |
> | libprism_es2.so | 64 | 64 |
> | libprism_sw.so | 68 | 64 |
> 
> ### macOS
> 
> | Native Library | Current | Stripped |
> | --------------- | --------- | -------- |
> | libdecora_sse.dylib | 88 | 88 |
> | libfxplugins.dylib | 88 | 84 |
> | libglass.dylib | 360 | 324 |
> | libglib-lite.dylib | 1,192 | 1,148 |
> | libgstreamer-lite.dylib | 1,708 | 1584 |
> | libjavafx_font.dylib | 64 | 64 |
> | libjavafx_iio.dylib | 308 | 300 |
> | libjfxmedia.dylib | 212 | 200 |
> | libjfxmedia_avf.dylib | 100 | 88 |
> | libjfxwebkit.dylib | 85,896 | 71,636 |
> | libprism_common.dylib | 20 | 20 |
> | libprism_es2.dylib | 64 | 64 |
> | libprism_sw.dylib | 88 | 88 |

Kevin Rushforth has updated the pull request incrementally with one additional commit since the last revision:

  Only strip binaries when doing a production build (`-PCONF=Release`)

-------------

Changes:
  - all: https://git.openjdk.java.net/jfx/pull/695/files
  - new: https://git.openjdk.java.net/jfx/pull/695/files/1b48c942..3ab25740

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jfx&pr=695&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jfx&pr=695&range=00-01

  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jfx/pull/695.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/695/head:pull/695

PR: https://git.openjdk.java.net/jfx/pull/695