add project test support to dav1d

[Yongjie2017]

No description provided.

[hpax]

Program nasm found: YES (/home/hpa/nasm/git/test/nasm)

../meson.build:538:17: ERROR: Command /home/hpa/nasm/git/test/nasm -v failed with status 1.

A full log can be found at /home/hpa/nasm/git/test/dav1dtest/dav1d/build/meson-logs/meson-log.txt
++ :
++ ninja -v
ninja: error: loading 'build.ninja': No such file or directory

• rev=1
• '[' 1 -ne 0 ']'
• echo dav1dtest compiling failed ...
  dav1dtest compiling failed ...
• exit 1
  make: *** [Makefile:39: dav1dtest] Error 1
  hpa@carbon-x1:/nasm/git/test$ /home/hpa/nasm/git/test/nasm -v
  /home/hpa/nasm/git/test/nasm: line 32: : No such file or directory
  /home/hpa/nasm/git/test/nasm: line 35: : command not found
  hpa@carbon-x1:/nasm/git/test$ cat /home/hpa/nasm/git/test/nasm

[hpax]

Something isn't working...

[Yongjie2017]

Program nasm found: YES (/home/hpa/nasm/git/test/nasm)

../meson.build:538:17: ERROR: Command /home/hpa/nasm/git/test/nasm -v failed with status 1.

A full log can be found at /home/hpa/nasm/git/test/dav1dtest/dav1d/build/meson-logs/meson-log.txt ++ : ++ ninja -v ninja: error: loading 'build.ninja': No such file or directory

• rev=1
• '[' 1 -ne 0 ']'
• echo dav1dtest compiling failed ...
  dav1dtest compiling failed ...
• exit 1
  make: *** [Makefile:39: dav1dtest] Error 1
  hpa@carbon-x1:/nasm/git/test$ /home/hpa/nasm/git/test/nasm -v
  /home/hpa/nasm/git/test/nasm: line 32: : No such file or directory
  /home/hpa/nasm/git/test/nasm: line 35: : command not found
  hpa@carbon-x1:/nasm/git/test$ cat /home/hpa/nasm/git/test/nasm

fix identified, thanks for the capture!
the last line of test/nasm is a copy that fails with "nasm -v".

[hpax]

Merged.