misc. buildsystem cleanup

While !87 (merged) doesn't work yet, these buildsystem changes worked when building for Android 28.

added 6 commits

• 5329fe39 - buildsystem: list the contrib packages to build
• 968891a9 - buildsystem: disable force building iconv
• 9ead4e4d - buildsystem: don't keep the last slash in libvlc_pc_dir
• 9fde100d - buildsystem: remove endianness detection hack
• d9fb70c8 - buildsystem: remove outdated USE_FFMPEG environment variable
• 092ed18b - buildsystem: build gettext as any other contrib if autopoint is not found

Compare with previous version

added 1 commit

• 0ae3e390 - buildsystem: build gettext as any other contrib if autopoint is not found

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mentioned in commit robUx4/vlc@7aeff055

mentioned in merge request vlc!5246 (merged)

mentioned in commit robUx4/vlc@58c60d13

added 2 commits

• 21a1cebf - buildsystem: don't use dummy.cpp trick anymore
• fcaf9421 - buildsystem: remove write-only variables

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mentioned in merge request !87 (merged)

added 1 commit

• 5b153a9c - buildsystem: build all usable contribs before showing the first one with an error

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changed the description

added 16 commits

• 5b153a9c...18f9c225 - 4 commits from branch videolan:master
• 18f9c225...10ea438f - 2 earlier commits
• fa2ab22d - buildsystem: build all the native tools necessary
• 067c239a - buildsystem: list the contrib packages to build
• 5a33488f - buildsystem: disable force building iconv
• 93d4e2df - buildsystem: don't keep the last slash in libvlc_pc_dir
• 37377e8b - buildsystem: remove endianness detection hack
• fff812a6 - buildsystem: remove outdated USE_FFMPEG environment variable
• cda15de6 - buildsystem: build gettext as any other contrib if autopoint is not found
• 4e605815 - buildsystem: don't use dummy.cpp trick anymore
• 1a3788f1 - buildsystem: remove write-only variables
• 5076ef76 - buildsystem: build all usable contribs before showing the first one with an error

Compare with previous version

enabled an automatic merge when the pipeline for 5076ef76 succeeds

merged

mentioned in merge request vlc!5770 (merged)

mentioned in merge request !97 (merged)