Point to the namespaced path for libbsd specific headers.
* Add more functions used by ported packages (check openssh).
-* Fix includes on man pages.
* Add missing man pages.
* Add a README.import file.
.ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
.Lb libbsd
.Sh SYNOPSIS
-.In stdlib.h
+.In bsd/stdlib.h
.Ft u_int32_t
.Fn arc4random "void"
.Ft void
.ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
.Lb libbsd
.Sh SYNOPSIS
-.In stdio.h
+.In bsd/stdio.h
.Ft char *
.Fn fgetln "FILE *stream" "size_t *len"
.Sh DESCRIPTION
.Lb libbsd
.Sh SYNOPSIS
.In sys/fcntl.h
-.In libutil.h
+.In bsd/libutil.h
.Ft int
.Fn flopen "const char *path" "int flags"
.Ft int
.ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
.Lb libbsd
.Sh SYNOPSIS
-.In stdio.h
+.In bsd/stdio.h
.Ft const char *
.Fn fmtcheck "const char *fmt_suspect" "const char *fmt_default"
.Sh DESCRIPTION
.Lb libbsd
.Sh SYNOPSIS
.In sys/types.h
-.In unistd.h
+.In bsd/unistd.h
.Ft int
.Fn getpeereid "int s" "uid_t *euid" "gid_t *egid"
.Sh DESCRIPTION
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
-.In stdlib.h
+.In bsd/stdlib.h
.Ft int
.Fo heapsort
.Fa "void *base"
.ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
.Lb libbsd
.Sh SYNOPSIS
-.In stdlib.h
+.In bsd/stdlib.h
.Ft int
.Fn dehumanize_number "const char *str" "int64_t *result"
.Ft int
.Lb libbsd
.Sh SYNOPSIS
.Fd #include <sys/types.h>
-.Fd #include <mdX.h>
+.Fd #include <bsd/mdX.h>
.Ft void
.Fn MDXInit "MDX_CTX *context"
.Ft void
.ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
.Lb libbsd
.Sh SYNOPSIS
-.In nlist.h
+.In bsd/nlist.h
.Ft int
.Fn nlist "const char *filename" "struct nlist *nl"
.Sh DESCRIPTION
.ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
.Lb libbsd
.Sh SYNOPSIS
-.In libutil.h
+.In bsd/libutil.h
.Ft "struct pidfh *"
.Fn pidfile_open "const char *path" "mode_t mode" "pid_t *pidptr"
.Ft int
.Lb libc
.Sh SYNOPSIS
.In limits.h
-.In stdlib.h
+.In bsd/stdlib.h
.Ft int
.Fn radixsort "const unsigned char **base" "int nmemb" "const unsigned char *table" "unsigned endbyte"
.Ft int
.ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
.Lb libbsd
.Sh SYNOPSIS
-.Fd #include <readpassphrase.h>
+.Fd #include <bsd/readpassphrase.h>
.Ft char *
.Fn readpassphrase "const char *prompt" "char *buf" "size_t bufsiz" "int flags"
.Sh DESCRIPTION
.ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
.Lb libbsd
.Sh SYNOPSIS
-.In stdlib.h
+.In bsd/stdlib.h
.Ft void *
.Fn reallocf "void *ptr" "size_t size"
.Sh DESCRIPTION
.ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
.Lb libbsd
.Sh SYNOPSIS
-.In unistd.h
+.In bsd/unistd.h
.Ft mode_t
.Fn getmode "const void *set" "mode_t mode"
.Ft void *
.ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
.Lb libbsd
.Sh SYNOPSIS
-.In string.h
+.In bsd/string.h
.Ft size_t
.Fn strlcpy "char *dst" "const char *src" "size_t size"
.Ft size_t
.ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
.Lb libbsd
.Sh SYNOPSIS
-.In string.h
+.In bsd/string.h
.Ft void
.Fn strmode "mode_t mode" "char *bp"
.Sh DESCRIPTION
.ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
.Lb libbsd
.Sh SYNOPSIS
-.In stdlib.h
.In limits.h
+.In bsd/stdlib.h
.Ft long long
.Fo strtonum
.Fa "const char *nptr"
.ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
.Lb libbsd
.Sh SYNOPSIS
-.In vis.h
+.In bsd/vis.h
.Ft int
.Fn unvis "char *cp" "char c" "int *astate" "int flag"
.Ft int
.Lb libbsd
.Sh SYNOPSIS
.In stdlib.h
-.In vis.h
+.In bsd/vis.h
.Ft char *
.Fn vis "char *dst" "int c" "int flag" "int nextc"
.Ft int