grep: implement -m MAX_MATCHES; fix help text
grep_file                                            771     822     +51
packed_usage                                       22573   22610     +37
.rodata                                           128058  128090     +32
grep_main                                            842     853     +11
max_matches                                            -       4      +4
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(add/remove: 1/0 grow/shrink: 4/0 up/down: 135/0)             Total: 135 bytes

2 files changed