got some envs

• smalloc is a libc-independent memory allocator, using mmap (may be used freely in other projects, I reccomend fun projects only. It is a very very basic algorithm and may cause high fragmentation and poor performance overall. However, we're only having some fun huh?)

• smalloc is used to fully implement a "sysh" environment support

• new "syntax" allows to set variables (already set and new ones, no unset)

$ % CC = gcc
$ %
<number of set env vars>
$ % new = var_set
$ envctl unset new

to unset a variable use the long envctl unset, using % VAR = will lead to segv

• Executable size:

> ldd sysh
	not a dynamic executable
> ls -lah sysh
-rwxr-xr-x 1 ssynx ssynx 16K  1 apr 00.20 sysh*
> strip sysh
> ls -lah sysh
-rwxr-xr-x 1 ssynx ssynx 8,6K  1 apr 00.20 sysh*