Changes in 3.86:
* chain.c32: fix chainloading the MBR of a hard disk (broken
in 3.85).
+ * mboot.c32: report the boot loader name in the information
+ structure.
+ * com32: set argv[0] in a com32 module.
+ * core: add a workaround for a bug in Xen HVM older than
+ version 3.3: disable halt on those platforms.
+ * Fix problems where certain operations in com32 modules would
+ cause the core to believe the system was idle.
Changes in 3.85:
* gPXELINUX: updated to gPXE 1.0.0. gPXELINUX can now do NBP