CLSA-2024-1720776957 vim: Fix of 10 CVEs

CVE-2023-0054: check the return value of vimregsub - CVE-2023-0049: avoid going over the NUL at the end - CVE-2023-0288: prevent the cursor from moving to line zero - CVE-2023-0433: check for not going over the end of the line - CVE-2023-2610: limit the text length to MAXCOL - CVE-2023-4750:...