RDKEMW-9893: set option to enable new dtags.

[lulicdarko]

Added option to enable new dtags.

Explanation:
This change introduces a Cmake option ENABLE_NEW_DTAGS to allow to use --enable-new-dtags for WPE Webkit build.
Primary goal is to force the linker to use DT_RUNPATH instead of legacy DT_RPATH. This change is important because:

1. DT_RUNPATH respects LD_LIBRARY_PATH unlike older DT_RPATH
2. This allows us to override system libraries or redirect library lookup at runtime without re-linkiing the entire Webkit.

Changes:

• Source/cmake/OptionsCommon.cmake

[magomez]

Same comments than in #1603

[lulicdarko]

Same comments than in #1603

It is same since it is doing exactly same as #1603 but for different webkit version. What exactly i need to change in comment.

[magomez]

Same comments than in #1603

It is same since it is doing exactly same as #1603 but for different webkit version. What exactly i need to change in comment.

Yes, I know it's the same patch than #1603 but applied to 2.38. What I mean is that the review comments for this PR are the same than those I added to #1603.

[lulicdarko]

Same comments than in #1603

It is same since it is doing exactly same as #1603 but for different webkit version. What exactly i need to change in comment.

Yes, I know it's the same patch than #1603 but applied to 2.38. What I mean is that the review comments for this PR are the same than those I added to #1603.

Got it, thanks.