fix:ldflags -ldl for earlier glibc version

[luoliwoshang]

fixed #1273

root@7387dedfb2ce:~/llgo# llgo run _demo/hello/hello.go 
hello world by println
hello world by fmt.Println
Hello world by c.Printf
root@7387dedfb2ce:~/llgo# cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=20.04
DISTRIB_CODENAME=focal
DISTRIB_DESCRIPTION="Ubuntu 20.04.6 LTS"

[codecov]

Codecov Report

❌ Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.26%. Comparing base (f41badd) to head (054591c).
⚠️ Report is 37 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/crosscompile/crosscompile.go	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1274      +/-   ##
==========================================
- Coverage   90.28%   90.26%   -0.02%     
==========================================
  Files          40       40              
  Lines       11704    11706       +2     
==========================================
  Hits        10567    10567              
- Misses       1010     1012       +2     
  Partials      127      127              

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