gcc -O4 is apparently not recognized anymore

Signed-off-by: Rafaël Carré <funman@videolan.org>

Close #7436
Signed-off-by: Rafaël Carré <funman@videolan.org>

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

They were spotted by ruby-elf's cowstats (gem install ruby-elf)
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

Signed-off-by: Rafaël Carré <funman@videolan.org>

Some mingw-w64 3.0 toolchains like mine, for example, have those DLLs in the second or possibly third field of LIBRARY_PATH. Skipping these could lead to weird C++ dlopen errors.
Signed-off-by: Rafaël Carré <funman@videolan.org>

By changing the description from a pointer to an array of characters,
the long tables don't need to be relocated. Unfortunately this adds
30KB of padding zeroes for empty strings.

Since Lookup() returns a custom entry_t object, with a possibly
modified description, this is implemented by creating a new structure
type. With more work it would be possible to simply filling all the
entries with final description and remove the extra matching and entry
manipulation.
Signed-off-by: Diego Elio Pettenò <flameeyes@flameeyes.eu>
Signed-off-by: Rafaël Carré <funman@videolan.org>

Close #7401
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

If psz_album is NULL you have no data to insert.
If you have an id then the value is already in database and only empty
string can erase it.

close #6019

Shorten build time.

On x86_64 linux build:

LIBTOOL make -j2  60,82s user 13,98s system 112% cpu 1:06,59 total
        make -j2  56,83s user 12,72s system 110% cpu 1:03,20 total
DOLT    make -j2  44,32s user 11,02s system 108% cpu 51,215 total
        make -j2  42,15s user 11,04s system 106% cpu 50,155 total
Signed-off-by: Rafaël Carré <funman@videolan.org>

Signed-off-by: Diego Elio Pettenò <flameeyes@flameeyes.eu>
Signed-off-by: Rafaël Carré <funman@videolan.org>

As agreed last week with upstream, that's basicailly the least insane
way to deal with the ever changing and expanding V4L2 API. This allows
compiling VLC with old Linux headers and run it well on a new Linux
kernel. This also avoids a pile of backward compatibility hacks.

A few other userspace tool already copy videodev2.h like that.

CROPCAP is no longer mandatory, and many drivers failed to provide it.
If there is no CROPCAP, then there is no cropping.